R.C.
Your feelings are completely normal and common especially when you have children who are beyond the baby stage. I think if we were honest with ourselves, most of us would admit that there's a bit of grieving that goes on whenever we pass out of this stage and into the next no matter how many children we have. My Mom had 7 children, but even at age 50 (I was in Jr High then) I remember hearing her say she longed for another baby. Childbearing is associated with youth and often women feel like they are suddenly "old" when those days are behind them.
Before I signed my husband up for surgery, I encourage you to really think about the practical aspect of having another child. You mentioned difficult pregnancies and preterm labor. Unfortunately, research shows that that would likely occur again and with even more challenges due to you being 3 or 4 yrs older than when you had your last child. Consider the financial challenges of having another child. Would you need a bigger house, car, or would it require you or your husband to have to work more to pay for expenses related to expanding your family? Does your husband desire more children? You want him to be 100% on board if you pursue this venture. Is it that you want to raise a child to adulthood or is it because you miss the joy of holding and caring for a baby? These are hard questions that I have had to ask myself as my husband and I have agreed that it is no longer prudent for us to expand our family. This is a decision to be made with so much more than emotion.
About 70% of vasectomy reversals result in a pregnancy within the first year after having it done. Not all of those pregnancies result in live-birth as miscarriage and fetal abnormality must be a consideration. I have a friend whose husband had a reversal and they expanded their family by 2 more children before having another vasectomy. It took more than a year to conceive after the surgery, but less than 2 yrs. Although she's happy with their decision, she admits it is a huge challenge having a 4th grader and 6th grader while caring for a 3 1/2 yr old and an 18 month old. She says she dislikes the fact that she must drag the "little kids" to sports practice and extracurricular activities of the older 2. Napping schedules are often disrupted resulting in cranky toddlers. She says it's like having 2 families and it is very exhausting and frustrating at times.
Best wishes in making this important decision. Hope this is helpful information. Nurse Midwife Mom